Improvement in devices for superheating steam



UNITED STATES PATENT EFICE.

NEWTON BROWN AND H. B. GREGG, OF GRATIS, OHIO.

Specification forming part of Letters Patent No. 51,796, dated January2, 1866.

To all whom it may concern:

Be it known that we, NEWTON BROWN and H. B. GREGG, of Gratis, Preblecounty, in the State of Ohio, have invented certain new and usefulImprovements in Apparatus for Superheating Steam; and we hereby declarethat the following is a true and exact description of the same,reference being had to the accompanying drawings, and to the letters ofreference marked thereon.

The nature of our invention consists in the arrangement of certainmechanical devices for raising the temperature of steam beforeintroducing it into a common steam-cylinder.

Figure l in the annexed drawings represents a side elevation of theboiler and steam-pipe attached, with a portion of the furnace removed.Fig. 2 represents a plan view of steam pipes or heaters with the boilerremoved.

The letters A and B designate two pipes running lengthwise of the boilerM. The pipes A and B extend about two-thirds of the length of the boilerM, and are placed in the furnace Gr represents a pipe placed at the topof boiler M, near its end. From G to the crosspipe K extends the shortconnecting-pipe H, through which the steam from the boiler M enters intothe cross-pipe K, and from thence is conveyed through the vertical pipesE into the horizontal pipes A and B, and from thence into the transversepipe D, from which it is discharged into the cylinder.

L designates the pipe used for cleanin g the boiler.

We are aware that the process of superheating steam is not new; but weclaim that the construction of ours is a great improvement, inasmuch asthere is much greater surface of pipe exposed to the heat of the furnacethan in the devices hitherto'used, and a consequent increase of thetemperature of the steam before it enters the cylinder.

Having thus described our invention, what we claim, and desire to secureby Letters Patent, is-

The arrangement of the pipes A and B, the transverse pipe D, thevertical pipes E, the cross-pipe K, and the pipes H and Gr, the Wholeconstructed as and for the purpose herein set forth.

NEWTON BROWN. H. B. GREGG. Witnesses:

N. B. COOPER, A. S'rrvnns.

